WorksheetsAstronomy Exam Review
Total questions: 20
Worksheet time: 14mins
Name
Class
Date
1.
According to the Doppler Effect, if an object is moving toward the observer, the light emitted from the object will be _____ and have shorter wavelengths.
a)
Blue shifted
b)
Red shifted
c)
Green shifted
d)
The light will not change
2.
Microwaves have a ____________ frequency than gamma waves.
a)
Higher
b)
Lower
3.
As the wavelength of a wave on the EMS decreases, the frequency and energy
a)
decreases
b)
increases
c)
stays the same
d)
increases then decreases
4.
The universe has been cooling and expanding over time, as evidenced by
a)
Cosmic gamma radiation
b)
Blue shifts
c)
Cosmic microwave radiation (CBR)
d)
Hubble's constant
5.
Which possible fate of the universe says that gravity will take over and pull objects back toward each other?
a)
The Big Crunch
b)
The Big Rip
c)
The Big Freeze
6.
Which force most likely causes our universe to expand as it is currently?
a)
Dark matter
b)
Gravity
c)
Dark energy
d)
Compression
7.
According to Kepler's 2nd law, objects near the sun take __________ time to orbit the sun than object further from the sun.
a)
More
b)
Less
c)
Equal
d)
No
8.
According to Kepler's 1st law, planets orbit the sun in slightly _______________ orbits.
a)
Elliptical
b)
Circular
c)
Straight
d)
Curved
9.
As an object gets closer to the sun, it's speed
a)
Stays the same
b)
Decreases
c)
Increases
10.
What happens to an ellipse when its eccentricity gets closer to zero?
a)
Becomes more elliptical
b)
Becomes more oval
c)
Becomes a circle
d)
Doesn't change
11.
If a planet is closer to the sun, what happens to its speed at it orbits the sun?
a)
The speed decreases
b)
The speed increases
c)
The time doesn't change
12.
Which process produces the energy needed for the sun to generate heat and light?
a)
Fusion
b)
Fission
c)
Radioactive decay
d)
Insolation
13.
During nuclear fusion, __________ elements combine to create ____________ elements.
a)
Heavier; lighter
b)
Lighter; heavier
c)
Lighter; smaller
d)
Heavier; larger
14.
Our Sun will spend the greatest part of its life as a ___________________ star.
a)
white dwarf
b)
nebula
c)
main sequence
d)
red giant
15.
Which of the following determines a star's fate?
a)
Temperature
b)
Luminosity
c)
Magnitude
d)
Mass
16.
Which force is responsible for a nebula becoming a protostar?
a)
Dark energy
b)
Gravity
c)
Momentum
d)
Dark matter
17.
Fusion starts in which phase of a star's life?
a)
Neblua
b)
White dwarf
c)
Neutron star
d)
Main sequence
18.
An average star, like our sun, will end as what type of star after its luminosity completely stops?
a)
Black hole
b)
Neutron star
c)
White dwarf
d)
Black dwarf
19.
What is the importance of supernovas for high mass stars?
a)
When stars supernova they release elements back into the universe
b)
When stars supernova they contribute to the formation of new stars
c)
When stars supernova they release large amounts of energy and light
d)
All of the above
20.
Which element should be most common in stars during their first stage of fusion?
a)
Helium
b)
Calcium
c)
Sodium
d)
Hydrogen
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